body
{
    background-color: #171A1F ;
    -webkit-user-select: none; 
    -khtml-user-select: none;
    -moz-user-select: none;
}

.main_container
{
    width: 950px ;
    height: 600px ;
    margin: 0 auto ;
}

.main_panel .ui-icon
{
    display: none !important;
}